September 2016 SPDS Book

Adulteration

• Non‐selective protein methods have fueled  the potential to adulterate samples with  non‐proteins and give inaccurate results • Melamine, urea, free amino acids cannot  be differentiated using Kjeldahl, Dumas  methods and have been the source of  d l scan a s • Public health is still at risk; Economics still  push adulteration

Existing Methods (Qualitative)

• Some proteins have FCC monographs.  For example,  Whey Protein is identified by testing for: – Ash – Fat – Lactose – Loss on drying – Nitrogen (and apply conversion factor) • DNA Analysis • LC/MS/MS